238618900836 has 120 divisors (see below), whose sum is σ = 637353541440. Its totient is φ = 77819496768.

The previous prime is 238618900813. The next prime is 238618900843. The reversal of 238618900836 is 638009816832.

It is a happy number.

238618900836 is a `hidden beast` number, since 2 + 386 + 189 + 0 + 0 + 83 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6145395 + ... + 6184101.

It is an arithmetic number, because the mean of its divisors is an integer number (5311279512).

Almost surely, 2^238618900836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238618900836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318676770720).

238618900836 is an abundant number, since it is smaller than the sum of its proper divisors (398734640604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

238618900836 is a wasteful number, since it uses less digits than its factorization.

238618900836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39135 (or 39124 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 238618900836 in words is "two hundred thirty-eight billion, six hundred eighteen million, nine hundred thousand, eight hundred thirty-six".